Query returns all application data when host not found

[maikel-09]

Plugin version: 4.2.1
Zabbix version: 5.0.17

When group, host application and item are filled in and the host cannot befound. De plugin will query for host like /.*/ and select all items for that application and item from all hosts.

Expected behaviour would be a "No data" in this situation

[alexanderzobnin]

I will check it out, I think if host field is empty, then no data should be fetched.